PowertrainP0640
SeriousSeverity: Serious - have it checked soon
Intake Air Heater Control Circuit
Key terms: Control module: a small computer that runs one part of the car · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine computer or one of its output circuits has a fault.
2Common causes
- Engine control module fault
- Power or ground connection problem
- Low battery or charging voltage
- Wiring short or open circuit
- Software or memory fault
3Can I drive?
If the engine runs normally, drive carefully to a workshop for diagnosis. If it runs badly, stalls, or will not restart, have the car towed.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 26
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0640 | Intake Air Heater Control Circuit SAE | Powertrain |
| BAIC Motor | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| BMW | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| BYD | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Chery | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Daewoo | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| DFFS | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| DFFX | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| DFXK | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| EOBD | P0640 | Styrekrets for inntaksluftvarmer Brand | Powertrain |
| Geely | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| GM | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Great Wall | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Hafei | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Holden | P0640 | Intake Air Heater Enable Circuit Brand | Powertrain |
| Hyundai | P0640 | Intake Air Heater Control Circuit SAE | Powertrain |
| Isuzu | P0640 | Intake Air Heater Control Circuit SAE | Powertrain |
| Land Rover | P0640 | Intake air heater control circuit Brand | Powertrain |
| Maserati | P0640 | Intake air heater control circuit Brand | Powertrain |
| Opel | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Peugeot | P0640 | Intake Air Heater Control Circuit SAE | Powertrain |
| Saab | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| MG (SAIC) | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Tata | P0640 | Intake Air Heater Control Circuit Brand | Powertrain |
| Toyota | P0640 | ECU internal fault (series left front side curtain airbag ignition system) Brand | Powertrain |
| Volkswagen | P0640 | SAE: Intake Air Heater Control Circuit Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Related codes
Browse Pxxx codes or P064xx codes.